Pemphredon annulàtus Say, 1837:379, ♂♀. ♂♀, Indiana; Vincent, 1978Vincent, D.L. 1978. A revision of the genus Passaloecus (Hymenoptera: Sphecidae) in America north of Mexico. The Wasmann Journal of Biology 36 (1 & 2):127-198.:157, Neotype ♀ (MCZ, no. 32405). - Cresson, 1862Cresson, E.T. 1862. Catalogue of the described species of North American Hymenoptera (Continued from page 211.). Proceedings of the Entomological Society of Philadelphia 1 (8):227-238. (distribution). - As Passaloecus annulatus: - Cresson, 1872Cresson, E.T. 1872. Hymenoptera Texana. Transactions of the American Entomological Society 4:153-292. (distribution); Dalla Torre, 1897Dalla Torre, C.G. 1897. Catalogus hymenopterorum hucusque descriptorum systematicus et synonymicus. Volumen VIII: Fossores (Sphegidae). Breitkopf & Härtel, Leipzig. 1-749. (distribution); Cockerell, 1898Cockerell, T.D.A. 1898. Contributions to the entomology of New Mexico. Proc. Davenport Acad. nat. Sci. 7:139-148. (distribution); Krombein, 1963Krombein, K.V. 1963. Natural history of Plummers Island, Maryland. XVII. Annotated list of the wasps (Hymenoptera: Bethyloidea, Scolioidea, Vespoidea, Pompiloidea, Sphecoidea). Proceedings of the Biological Society of Washington 76:255-280. (distribution); Vincent, 1978Vincent, D.L. 1978. A revision of the genus Passaloecus (Hymenoptera: Sphecidae) in America north of Mexico. The Wasmann Journal of Biology 36 (1 & 2):127-198. (distribution).
Pemphredon marginatus Say, 1837:379, Vincent, 1978Vincent, D.L. 1978. A revision of the genus Passaloecus (Hymenoptera: Sphecidae) in America north of Mexico. The Wasmann Journal of Biology 36 (1 & 2):127-198.:157, Holotype ♀ (?), destroyed. Synonymized with Passaloecus annulatus (Say, 1837) by Vincent, 1978Vincent, D.L. 1978. A revision of the genus Passaloecus (Hymenoptera: Sphecidae) in America north of Mexico. The Wasmann Journal of Biology 36 (1 & 2):127-198.:157.
Passaloecus rivertonensis Viereck, 1904:243, Vincent, 1978Vincent, D.L. 1978. A revision of the genus Passaloecus (Hymenoptera: Sphecidae) in America north of Mexico. The Wasmann Journal of Biology 36 (1 & 2):127-198.:157, Holotype ♂ (ANSP, no. 10202). - Vincent, 1978Vincent, D.L. 1978. A revision of the genus Passaloecus (Hymenoptera: Sphecidae) in America north of Mexico. The Wasmann Journal of Biology 36 (1 & 2):127-198.:157 ( listed as synonym of Passaloecus annulatus (Say, 1837)).